Jenelle Evans’ boyfriend, David Eason, looks every inch a proud dad in the latest Instagram update by the “Teen Mom 2” star.

The soon-to-be parents of baby girl Ensley Jolie Eason attended the celebration of the 100 episodes milestone of “Teen Mom 2,” and from the set, the lovely pair posed for the camera to show their fans Evans’ growing belly.

On Sunday, Evans took to Instagram to share snaps and clips from the set of the “Teen Mom 2” 100 episodes party. The first post she shared with her fans was a short clip showing the cast and crew expressing their joy over the show’s milestone. The clip also shows Evans’ first son, Jace, standing beside the MTV series’ cake that’s adorned with a huge “100” on top. Celebrity doctor Drew Pinsky could also be seen posing for the camera behind the cake.

Aside from celebrating the show’s milestone, Evans also flaunted her baby bump alongside her third baby daddy in an Instagram photo. In the snap, the proud parents are all smiles as they face the camera, with Eason’s hand touching Evans' baby bump. Evans donned a floral dress, denim jeans and a pair of beige boots in the photo, while Eason wore a dark brown polo shirt, black pants and brown sneakers. The latter also rocked huge eyeglasses and a cap for the couple shot.

In a follow-up snap, Jenelle could be seen sitting on a chair as one of the technical staff fixes her microphone. Minutes after posting the pic, she shared another video clip from the set. This time, the clip shows Eason signing what appears to be a small green rubber duck before throwing it towards the audience at Evans’ command. She captioned the clip: “Signing duckies and throwing them out to the audience today with David! Had so much fun with you guys at the Unseen Moments/Ask The Moms Special! Hope you guys liked watching! Tune in to this new season of #TeenMom2 to see what was filmed today!”

Jenelle’s new update comes weeks after she and her baby daddy revealed on social media that their first baby together is a girl and that they are planning to name her Ensley Joie Eason, as reported by Reveal. Ever since she announced her third pregnancy in August, Evans has been keeping her fans updated via social media.

Though the couple appears to be enjoying happy times these days, they also had their fair share of roadblocks in their relationship. In October, Eason was sentenced to 60 days in prison after violating a protective order against his former girlfriend back in March. Eason pleaded not guilty to the violation, but the judge found him guilty. Us Weekly learned last month that Eason appealed the ruling, but the court date is yet to be scheduled.

Both Evans and Eason are parents of two kids from different partners. Evans is a mom to ex-boyfriend Andrew Lewis’ son, Jace, who is now 7 years old. She is also a mother to Nathan Griffith’s son, Kaiser, who is already 2. On the other hand, Eason has a daughter named Maryssa and a son named Kaden.

David Eason and Jenelle Evans David Eason and Jenelle Evans are excited for the birth of their first baby together. Pictured: The couple posing for the camera at the 2016 MTV Video Music Awards in New York on Aug. 28. Photo: Reuters/Eduardo Munoz